Vania



J. S. BANCROFT & M. C. INDAHL.

MATRIX HOLDER FOR TYPE CASTING MACHINES. APPLICATION FILED 050.16, 1915.

1,193,345. Patented Aug. 1, 1916.

3 SHEETS-SHEET I.

gmumto'z 5 I J. s. BANCROFT & M. c. INDAHL.

MATRIX HOLDER FOR TYPE CASTING MACHINES.

APPLICATION FILED DEC. I6. I915.

3 SHEETSSHEET 2.

1 m A d 6 b H e a D1 .I. S. BANCROFT & M. C. INDAHL.

MATRIX HOLDER FOR TYPE CASTING MACHINES.

APPLICATION FILED DEC. IE, I915.

1,193,345.. Patented Aug. 1, 1916.

3 SHEETS-SHEET 3.

JOHN SELLERS BANCROFT AND MAURITZ "C. INDAHL, 0F PHILADELPHIA, IENN'SYL- VANIA, ASSIGNOBS TO LANSTON MONOTYPE MACHINE COMPANY, OF PHILADEL- PHIA, PENNSYLVANIA, A CORPORATION OF VIRGINIA.

Specification of Letters Patent.

Patented ta i, ioie.

Application filed December 16, 1915. Serial No. 67,222.

To all whom it may concern:

Be it known that we, JOHN SELLERS BAN- onorr and Maonrrz G. INDAHL, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Matrix-Holders for Type-CastingMachines; and we do hereby declare the following to be a full, clear, and exact description of the same, reference being bad to the, accompanying drawings.

This invention relates to matrix holders for type casting machines of'the class illustrated in Patent No. 625,998, May 30, 1899 and now commonly known as the .Lanston monotype casting machine, when used or equipped forcasting display type. Display type are, as a rule, of greater dimensions than type designed to be cast by the machine in the production of composition, or they are of a character which it is not desirable to produce from the regular matrix equipment provided for normal composition, because of the infrequency with which the characters are used, and hence it becomes desirable to provide the machine with means whereby the. display type matrices holder may be quickly and conveniently substituted forthe regular matrix holder, and with means whereby the display matrices them selves may be easily and conveniently changed,-so as to give a maximum capacity. with a minimum labor on the part of the attendant.

The type matrix employed in the production of display type'and designed to be held in the devices forming the Esubject matter of the present invention is well illustrated in Patent No. 904,510, dated Nov. 24:, 1908, and certain characteristics of the holder illustrated in said patent are preserved and utilized in the holder of the present invention. Practice has demonstrated the desirability of positioning the matrix by the cooperation of two of its sides with gaging surfaces arranged at right angles to each other, and consequently the gaging surfaces of the structure illustrated in the said patent are preserved and utilized in the present device.

Referring to the accompanying drawings,

and designed to be substituted in the castmg machine for the usual die case frame.

"Fig. 2 is a sectional view in a vertical plane indicated by the line 2-2 in Fig. 1. Fig. 3 1s a perspective view looking at the under side of the parts with the main body portlon of the holder and the matrix carrier separated. Fig. 4c is a bottom plan view of the carrier with the cover plate removed. Fig. 5 is a view corresponding to' Fig. 4: with a portion of the cover plate removed and illustrating the relative movement of the clamping jaws. Fig. 6 is a perspective view illustrating the clamping jaws and lever for operating the same. Fig. 7 is a bottom plan view of a modified form of carrier and clamping jaw operating devices.

Like reference characters throughout the several figures indicate the same parts.

The body portion of the holder indicated at 1 in the accompanying drawings, is designed to be substituted forthe usual die case frame of the casting machine, and for this purpose it is provided with parallel ribs or ways 2 to fit in the ways normally occupied by the die case frame and at one end it has a hook-like extension or openguide 3 for cotiperation with the positioning mechanism of the casting machine. This frame or body portion 1 is preferably essentially a plate-like structure and has on its under side, Ways 4: adapted for the reception of the matrix block or carrier 5. The carrier is designed to bereadily inserted or removed and for this purpose it is provided with side guides or ribs 6 fitting in the ways a and it is preferably positioned accurately in the frame by cooperation with a gaging stop 7 and retained in such position by a spring catch 8 entering an opening 9 in the frame and provided with a finger projection 10 by which the catch may be readily released when the carrier or block is to be removed for changing the matrices to be presently described. To facilitate the handling of the matrix block or carrier it is provided with a handle 11 projecting at a convenient angle to permit the attendant. to grasp the handle and at the same time depress the spring catch by pressing his thumb on the part 10, thus enabling the releasing and removing operation to be performed in the simplest possible manner- The carrier 5 is preferably formed with its under surface free from recesses or chambers, as shown clearly 1n Flg. 3, but projecting from said surface are the gaging projections 12 and 13, the gaging edges of said projections being arranged preferably at right angles to each other and adapted to accurately position the matrix 14 with the cavity therein. in proper relative position .for,co6peration with the mold cavity of the casting machine. The gaging edges of the I gaging projections 12, 13, coiiperate with correspondingv gaging edges of the matrix as heretofore, and they are held by clampwhen the holder is mounted in the casting machine the face off the matrix will be presented squarely to the top of the mold.

One of the objects of the present invention is to provide a carrier which will present no cavities or openings for the'lodgment of molten metal, should a so-called squirt occur, and with this object in view, the clamping jaws are formed with faces 15 and 16 which overlie the under face of the holder 5, the body portions of the jaws being in the form of shanks or slides 15 and 16 mounted in transverse ways '17 and 18 in the carrier 5. The guides 17 and 18 are formed in the upper portion of the'carrier 5 and concealed by a cover plate 19, which cover plate-also serves to inclose the operating devices for the jaws.

In the preferred construction, illustrated in Figs. 1 to 5, inclusive, the operating devices for the jaws consist of a spring or springs for advancing the jaws, and a sim ple floating operating lever associated with the jaws and springs in such wise that the fulcrum on which the lever moves may shift from a position in proximity to one jaw to a position in proximity to the other jaw, whereby the jaws may be made tooperate successivelythe objects aimed at in this re= spect being substantially the objects fully set forth in the patent last above mentioned, namely, first, to seat the matrix firmly against the gaging projectionsand to then clamp the same so that it cannot be accidentally displaced.

As shown in Figs. 1 to 5, inclusive, an actuating lever 20 is pivotally connected at 21 with the jaw 16 and at 22 with the jaw 15. A spring 23 is connected at one end with the lever and at the opposite end with the carrier 5 to normally close the jaws by moving them in opposite directions, the pivotal connection with one jaw serving as the fulcrum for the lever in exerting its power on the otherjaw. The projecting end of the lever 20 is formed with a finger piece at 24 arranged in proximity to the handle 11, and in position. to be operated by the thumb of the hand grasping the handle. Thus, in operation, assuming that the jaws are closed and it is desired to open them, a pressure on the finger piece 24 toward the handle 11 will first cause the lever to swing on the pivotal point 22, thereby opening the jaw 16, and when the latter reaches the limit of its outward movement, or when, as in the preferred construction, the movement is arrested by the engagement of the lever with 23. Assuming now that the matrix has been removed and a new one substituted, a release of the pressure on the finger plece 24 of'the lever will cause the movements totake place'in the reverse order; that is to say, the jaw 15 will be first advanced into engagement with the matrix, the matrix will be moved into engagement with the gaging projections and properly positioned, and upon the arrest of the forward movement of thejaw 15 by the matrix, reaching its seat, the fulcrum of the lever will shift tothe pivotal connection with the jaw 15 at 22 andthe jaw 16 will be advanced to clamp the matrix and hold it against possible accidental displacement. In 'Fig. 5 the parts are shown in full lines with the jaw 16 in its released position and in dotted lines the further movement of the lever is shown to release the jaw 15.

Inasmuch as the parts must be very compactly arranged, and it is desirable to provide a considerable spring pressure for the actuating lever, with a considerable range of elastic movement, it is preferred to provide a plurality of springs 23, as shown in Figs. 4 and 5, each being in the form of a relatively small coil which will readily chamber in a recess 26 formed in the body of the carrier 5 below the level of the top of the carrier so that all of the parts may be inclosed by the cover plate 19. It will be understood, that the cover plate 19 is provided with an opening for the passage of the centering in of the casting machine and that the carrier 5 is provided with a center pin opening or socket 27 which corresponds to the centering pin socket in common use messes rangement illustrated in Figs. 1 to 6, inclusive. In Fig. 7, for example, a different mechanical embodiment is illustrated, wherein the jaws while normally held retracted by spring pressure are nevertheless held advanced by yielding or spring pressure after they have been initially advanced by the opwith the lever 20 and the shank 16 of the jaw 16 is connected with the lever by a loose pivotal connection formed by a pin; and slot at 28. A spring 29 connects the lever and shank 16 holdlng the pin 28 at the bottom of the slot, while a spring 30 is interposed between the end of the lever and the body of the carrier. At the opposite end of the lever there is a link 31 having'an adjustable shoulder in the form of a'milled nut 32 thereon adapted to cooperate witha bell crank lever 33 pivotally mounted on the carrier in position to cotiperate with a locking and releasing lever having a projecting arm 34, and operating finger projections 35, 36. i

The spring 30, acting through the actuating lever 20, normally tends to hold the two jaws in their open position. When, however, the opposite end of the lever 20 is advanced by the movement of the bell crank lever to the position shown in Fig. 6, the jaw 15 will be first advanced, and by its coiiperation with the matrix l lwill move the sameinto position against the gaging projections 12 and 13, further movement ofthe lever causing it to fulcrum on the pivotal connection with the shank of the jaw 15", and to thereby advance the jaw 16' into engagement with the matrix, this final movement of the lever causing an extension of both the springs-'29 and 30 and said springs thereafter operate to maintain the jaws advanced with a yielding pressure, which will compensate for any possible variation in the size of the matrices, or wear on their clamping faces. In this construction, the bell crank lever 33 and the operating lever 34 cooperate to form a looking catch which will maintain the parts in the position shown in Fig. 7, but upon a release of the lever 34 by inward pressure on the finger piece 36, the bell crank lever is free to yield and the spring 30 will exert itself to edect the release of both clamping jaws, the jaw 16" first moving rearwardly and the pivotal connection between the shank of the said jaw and the" lever then serving as the fulcrum for the lever to efl'ect the rearward movement of the jaw 15".

Referring again to the construction illusmachines embod ing trated in Figsl to 5, it is preferred that the arrangement shall be such that the jaws will be held against rearward movement when the carrier is in place in the frame 1 and to effect this result the ways 17 and 18 are made in the form of open slots extending inwardly from opposite edges of the carrier and when the jaws are advanced into matrix clamping position. and the carrier is inserted in the frame the ways of the frame will intersect the ways 17 and 18 and thus limit or prevent reverse movement of the jaws. With this arrangement it will be seen that a matrix having been positioned in the carrier and the carrier inserted in the frame, there is little or no liability of the matrix being released, accidentally or otherwise until the carrier is again removed for the purpose of substituting or removing the matrlx therefrom.

What is claimed is: I

1. A holder for matrices of type casting machines, embodying opposing movable clamping jaws, a lever cooperating with both jaws to move them in opposite directions, and a springfor holding the jaws advanced with a yielding pressure.

2. A holder for matrices of type casting opposing movable clamping jaws, a ever with which said jaws cooperate at separated points in the length of the lever, a spring cooperating with the lever for imparting movementto the jaws in opposite directions, and means for moving the 'lever against the tension of the spring.

A-holder for matrices of type casting machine's embodying opposing movable clamping jaws, a lever with which both of the jaws are pivotally connected at points spaced from each other, in the direction of the length of the lever, a spring for moving the lever in one direction and a finger piece for moving the lever in the opposite direction whereby the jaws are moved toward and from each other. I

4. A holder for matrices of type casting machines embodying opposing movable clamping jaws, a lever pivotally connected with the respective jaws at points spaced apart in the direction of the length of the lever, said lever being free to move on axes in proximity to the jaws, a spring for moving the lever in one direction and a finger piece for moving the lever in the opposite direction whereby thejaws are moved successively into open or closed positions.

5; A holder for matrices of type casting machines, embodying opposing movable clamping jaws, a lever having a plurality .of pivotal axesand coiiperating with the respective jaws in proximity to the respective axes, a spring for holding the lever under operating with the lever for holding the jaws in one position, and a finger piece associated with the lever for imparting motion thereto to move the jaws in the opposite direction.

7. In a holder for matrices of type casting machines, the combination of the following elements, to-wit, a matrix carrier provided with gaging projections arranged at an angle to each other for determining the location of the matrix, a pair of opposing clamping jaws movable toward and from each other, a lever pivotally connected with said jaws at points spaced apart longitudinally of the lever, said lever being free to move on axes located in proximity to the respective aws, a spring connected with the lever in proximity .to one jaw, anda finger piece associated with the lever in proximity to the other jaw, the arrangement being, such that the lever will be moved on its respective axes in succession to move the jaws into open or closed positions successively.

8. In a holder for matrices of type casting machines, the combination of the following elements to-wit, a matrix carrier embodying gagmg projections arranged with their gaging surfaces at an angle to each other, a clamping jaw for advancing the matrix into contact with both of the gaging projections, a second clamping jaw for holding the matrix when positioned against the projections, a lever pivotally connected with both of said jaws, and means for imparting pivotal movement to said lever successively on axes in proximity to the respectivejaws, whereby the jaws will be advanced successively into engagement with the matrix.

9. In a holder for matrices of type casting machines, the combination of the following elements, to-wit, a matrix carrier, provided with gaging projections having gaging surfaces arranged at an angle to each other, a handle projecting at one end of the carrier, a pair of clamping jaws movably mounted in the carrier in position to cooperate with a matrix positioned by the gaging projections, a lever pivotally associated with both of the jaws, a spring connected with the lever, and a finger piece controlling the lever arranged in proximity to the handle whereby the carrier may be held in one hand and the jaws manipulated by the thumb or fingers of vthat hand to facilitate the insertion or removal of the matrices.

10. In a holder for matrices of type casting machines, the combination with a matrix carrier, provided with gaging projections having their gaging surfaces arranged at an angle to ea'ch other, transversely movable clamping jaws mounted in ways in the carrier to move toward and from the gaging projections, a lever pivotally associated with both of the jaws and movable parallel with the plane of the matrix held by the jaws, a spring connected at one end with the lever and at the opposite end with the carrier, a cover plate inclosing the lever and spring, and a finger piece associated with the lever at one edge of the carrier whereby the top and bottom surfaces of the carrier are left free from obstructions and recesses.

11. A holder. for matrices of type casting machines embodying a matrix carrier having a plane unbroken bottom surface with gaging projections thereon having their gaging surfaces arranged at an angle to each other, and transverse ways .in said carrier for the reception of clamping jaw shanks, of clamping jaws overlying the under surface of the carrier, shanks for said jaws working in ways in the carrier, and operating devices for the jaws mounted in the carrier and cooperating with the shanks of the jaws whereby the under portion-of the matrix holder is free from recesses or chambers in which molten metal might find lodgment. a

12. A holder for matrices of type casting machines embodying opposing movable clamping jaws, a lever pivotally associated with both of said jaws for moving the same in opposite directions, said lever being free to move on axes in proximity to the respec- 

